WO2007149934A3 - Doppler sensors for the derivation of torsional slip, friction and related parameters - Google Patents

Doppler sensors for the derivation of torsional slip, friction and related parameters Download PDF

Info

Publication number
WO2007149934A3
WO2007149934A3 PCT/US2007/071690 US2007071690W WO2007149934A3 WO 2007149934 A3 WO2007149934 A3 WO 2007149934A3 US 2007071690 W US2007071690 W US 2007071690W WO 2007149934 A3 WO2007149934 A3 WO 2007149934A3
Authority
WO
WIPO (PCT)
Prior art keywords
travel
derivation
friction
related parameters
doppler sensors
Prior art date
Application number
PCT/US2007/071690
Other languages
French (fr)
Other versions
WO2007149934A2 (en
Inventor
Carvel Holton
Medhi Ahmadian
Original Assignee
Virginia Tech Intell Prop
Carvel Holton
Medhi Ahmadian
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US11/765,215 external-priority patent/US7705972B2/en
Application filed by Virginia Tech Intell Prop, Carvel Holton, Medhi Ahmadian filed Critical Virginia Tech Intell Prop
Publication of WO2007149934A2 publication Critical patent/WO2007149934A2/en
Publication of WO2007149934A3 publication Critical patent/WO2007149934A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/36—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light
    • G01P3/366—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light by using diffraction of light
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
    • B60W40/02—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to ambient conditions
    • B60W40/06—Road conditions
    • B60W40/068—Road friction coefficient
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00—Testing of vehicles
    • G01M17/007—Wheeled or endless-tracked vehicles
    • G01M17/02—Tyres
    • G01M17/027—Tyres using light, e.g. infrared, ultraviolet or holographic techniques
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/50—Systems of measurement based on relative movement of target
    • G01S17/58—Velocity or trajectory determination systems; Sense-of-movement determination systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/88—Lidar systems specially adapted for specific applications

Abstract

An optical method and apparatus are described for the measurement of properties of a travel vehicle or a travel surface upon which the travel vehicle travels, which includes providing an incident light from a light source to the travel surface, collecting light reflected from the travel surface, determining a surface induced Doppler shift from the incident and collected light and determining at least one of a motion property of the travel vehicle and a surface property of the travel surface based on the determined surface induced Doppler shift.
PCT/US2007/071690 2006-06-20 2007-06-20 Doppler sensors for the derivation of torsional slip, friction and related parameters WO2007149934A2 (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US81489006P 2006-06-20 2006-06-20
US81489106P 2006-06-20 2006-06-20
US60/814,890 2006-06-20
US60/814,891 2006-06-20
US84608206P 2006-09-21 2006-09-21
US60/846,082 2006-09-21
US11/765,215 US7705972B2 (en) 2006-06-20 2007-06-19 Doppler sensor for the derivation of torsional slip, friction and related parameters

Publications (2)

Publication Number Publication Date
WO2007149934A2 WO2007149934A2 (en) 2007-12-27
WO2007149934A3 true WO2007149934A3 (en) 2008-11-20

Family

ID=39996518

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/071690 WO2007149934A2 (en) 2006-06-20 2007-06-20 Doppler sensors for the derivation of torsional slip, friction and related parameters

Country Status (1)

Country Link
WO (1) WO2007149934A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8751091B2 (en) 2008-03-13 2014-06-10 Koninklijke Philips N.V. Sensor system, vehicle control system and driver information system for vehicle safety
US10682090B2 (en) 2016-06-29 2020-06-16 General Electric Company Sensing device for controlling the delivery of care to immobile patients
CN116577997B (en) * 2023-07-06 2023-10-03 西北工业大学 Omnidirectional trolley parameter identification method based on concurrent learning

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050102083A1 (en) * 2003-11-06 2005-05-12 Ford Global Technologies, Llc Roll stability control system for an automotive vehicle using an external environmental sensing system
US20060232052A1 (en) * 1995-06-07 2006-10-19 Automotive Technologies International, Inc. Vehicular Bus Including Crash Sensor or Occupant Protection System Control Module

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060232052A1 (en) * 1995-06-07 2006-10-19 Automotive Technologies International, Inc. Vehicular Bus Including Crash Sensor or Occupant Protection System Control Module
US20050102083A1 (en) * 2003-11-06 2005-05-12 Ford Global Technologies, Llc Roll stability control system for an automotive vehicle using an external environmental sensing system

Also Published As

Publication number Publication date
WO2007149934A2 (en) 2007-12-27

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